Comprehensive SEO Optimization for Web Development

I require a proficient SEO specialist to optimize my web development service across all major web browsers. These browsers include:

- Google Chrome
- Mozilla Firefox
- Apple Safari
- Microsoft Edge
- Tor Browser
- Opera
- Brave

The goal of this project is to improve the organic ranking of my service in search engines pertaining to 'Web Development'.

Key Responsibilities:

- Investigate and perform thorough keyword research related to 'Web Development'.
- Execute effective on-page and off-page SEO strategies.
- Regularly track, analyze and report the performance.

Ideal Skills:

- Prior experience in SEO optimization for web development services.
- Proficiency in working with various web browsers.
- Proven track record of improving organic search ranking.
- Knowledge of current SEO tools and practices.

Please provide details of your past experiences and results if available. Looking forward to your bids.